The prostate transglutaminase (TGase-4, TGaseP) regulates the interaction of prostate cancer and vascular endothelial cells, a potential role for the ROCK pathway

Jiang, Wen Guo ORCID: https://orcid.org/0000-0002-3283-1111, Ablin, Richard J., Kynaston, Howard ORCID: https://orcid.org/0000-0003-1902-9930 and Mason, Malcolm David ORCID: https://orcid.org/0000-0003-1505-2869 2009. The prostate transglutaminase (TGase-4, TGaseP) regulates the interaction of prostate cancer and vascular endothelial cells, a potential role for the ROCK pathway. Microvascular Research 77 (2) , pp. 150-157. 10.1016/j.mvr.2008.09.010

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Abstract

Prostate transglutaminase (TGase-4 or TGaseP) is an enzyme that is uniquely expressed in prostate tissues. The function of the TGase, implicated in the cell-matrix, is yet to be fully established. In the present study, we investigated the role of TGase-4 in tumor-endothelial cell interactions, by creating a panel of prostate cancer cell lines that have different expression profiles of human TGase-4. Here, we report that prostate cancer cells PC-3, when over-expressing TGase-4 (PC-3(TGase4exp)) increased their ability to adhere to quiescent and activated (by hepatocyte growth factor) endothelial cells. In contrast, the prostate cancer cell CAHPV-10, which expressed high levels of TGase-4, reduced the adhesiveness to the endothelial cells after TGase-4 expression was knocked down. By using frequency based electric cell impedance sensing, we found that TGase-4 mediated adhesion resulted in a change in impedance at low frequency (400 Hz), indicating a paracellular pathway disruption. The study further showed that expression of TGase-4 rendered the cells to exert regulation of endothelial interaction by bypassing the ROCK pathway. It is therefore concluded, that TGase-4 plays a pivotal role in the interaction between endothelial cells and prostate cancer cells, an action which is independent of the ROCK pathway.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Medicine
Subjects:	R Medicine > RC Internal medicine > RC0254 Neoplasms. Tumors. Oncology (including Cancer)
Uncontrolled Keywords:	Endothelial cells; Tumor-endothelial interaction; Transglutaminase-4; Endothelial invasion; Electric cell impedance sensing; Prostate cancer; Hepatocyte growth factor; ROCK
Publisher:	Elsevier
ISSN:	0026-2862
Last Modified:	19 Oct 2022 10:49
URI:	https://orca.cardiff.ac.uk/id/eprint/25630

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